<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <!-- 最新版本的 Bootstrap 核心 CSS 文件 -->
    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@3.3.7/dist/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u"
        crossorigin="anonymous">

    <!-- jquery -->
    <script src="https://cdn.bootcss.com/jquery/3.3.1/jquery.js"></script>

    <!-- 最新的 Bootstrap 核心 JavaScript 文件 -->
    <script src="https://cdn.jsdelivr.net/npm/bootstrap@3.3.7/dist/js/bootstrap.min.js" integrity="sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa"
        crossorigin="anonymous"></script>
    <style>
        .search{
                background-color: lightgrey;
                width: 600px;
                height: 60px;
                border:10px solid  lightgrey;
                padding-right: 100%; 
            }

            .input-group{
        width: 400px;
    }

    .content{        
        width: 1550px;
        height: 201px; 
    }
    .bg-primary{ 
        float: left !important;
        margin: 10px;
        width: 400px;
        height: 185px;
        background-color:slategray;
    }


        </style>
</head>

<body>
    <!-- 搜素框 -->
    <div class="search">
        <div class="col-md-6">
            <div class="input-group">
                <input type="text" class="form-control" placeholder="Search Our Website & Products">
                <span class="input-group-addon"><i class="glyphicon glyphicon-search"></i></span>
            </div>
        </div>
    </div>

    <!-- 内容 -->
    <div class="content">
        <div class="col-sm-10">
            <div class="bg-primary" style="padding:10px">
                <p style="font-size:25px">Sleek</p>
                <dd>Loren ipsum dolor sit amet,consectur.</dd>
                <dd>adipscing elit.Aene pharetra vanus maximus.</dd>
                <dd>Cras condimentum portutor emin a egestas.</dd>
                <dd>Suspendisse potenti.</dd>
                <button type="submit" class="btn btn-default">Read More</button>
            </div>

            <div class="bg-primary" style="padding:10px">
                <p style="font-size:25px">Pesponsive</p>
                <dd>Loren ipsum dolor sit amet,consectur.</dd>
                <dd>adipscing elit.Aene pharetra vanus maximus.</dd>
                <dd>Cras condimentum portutor emin a egestas.</dd>
                <dd>Suspendisse potenti.</dd>
                <button type="submit" class="btn btn-default">Read More</button>
            </div>

            <div class="bg-primary" style="padding:10px">
                <p style="font-size:25px">Clean</p>
                <dd>Loren ipsum dolor sit amet,consectur.</dd>
                <dd>adipscing elit.Aene pharetra vanus maximus.</dd>
                <dd>Cras condimentum portutor emin a egestas.</dd>
                <dd>Suspendisse potenti.</dd>
                <button type="submit" class="btn btn-default">Read More</button>
            </div>
        </div>
    </div>


</body>

</html>